Old friends cannot with impunity be sacrificed for new ones.
 Aesop, Aesop's Fables. copy citation

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Author Aesop
Source Aesop's Fables
Topic sacrifice impunity
Date
Language English
Reference
Note Translated by George Fyler Townsend
Weblink http://www.gutenberg.org/files/21/21-h/21-h.htm

Context

““That is the very reason why we are so cautious; for if you yesterday treated us better than the Goats you have had so long, it is plain also that if others came after us, you would in the same manner prefer them to ourselves.” Old friends cannot with impunity be sacrificed for new ones. The Mischievous Dog A DOG used to run up quietly to the heels of everyone he met, and to bite them without notice. His master suspended a bell about his neck so that the Dog might give notice of his presence wherever he went.” source